asn.dev

Autonomous system

AS56644 SYNFS-AS

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Fundtech Financial Messaging

United Kingdom · AI-generated

business finance uk

SYNFS-AS is held by Fundtech Financial Messaging Ltd.

What it's used for

  • The space carries corporate infrastructure for a financial services provider, evidenced by the netname SynergyFS-PI and registrant Fundtech Financial Messaging Ltd.
  • The AS announces 512 IPv4 addresses across 1 prefix (91.226.24.0/23) with 3 observed neighbours, indicating a small, self-contained business network rather than a transit or access provider.
  • Traffic from this AS consists of internal corporate communications and financial messaging services for the organisation's operations.

Notable

  • The registrant Fundtech Financial Messaging Ltd matches the AS holder, confirming direct ownership of the address space.
  • Fundtech Financial Messaging Ltd was acquired by D+H, a global financial services provider.
  • The address inventory is a single /23 block, typical for a corporate site or small business estate.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8220COLT Technology Services Group Limited50
AS5413Wavenet Limited41
AS2856British Telecommunications Limited25

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS56644
Registry name
SYNFS-AS
Registrant
COLT-UK
Abuse contact
ssbsupport@finastra.com
Registered
2011-04-19
Last changed
2023-01-27
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS56644
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS56644

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,773 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check